Wood-extracting device.



J; w. JOHNSON. WOOD EXTBAGTING DEVICE. APPLICATION FILED SEPT. 16,1908.

Patented July 11, 1911.

3 SHEETS-SHEET 1.

v gn o e uov Jbizn wfihnson. v

w witnooa og J. W.-JOHNSON.

WOOD EXTRA'GTING DEVICE.

APIPLIOATION FILED SEPT. 16, '1908.

997,557. Patented July 11, 1911 a sums-51mm 2.

Witnesses J. W. JOHNSON.

ARPL

EXTBAGTING DEVICE.

. ION FILED SEPT. 16, 1908. 1

-SHEET 3.

Patented July 3 slums J hn John s n 30m? W. .JOHNSO 1\I, or JACKSONVILLE, FLORIDA.

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To all whom it may-concern:

Be 'itknown that 1, JOHN W. Jonnsorz, a citizen of the United States, residing at Jacksonville, in the 'county f Duval and .State of Florida, have invented certain new; and useful Improvements in Wood-Extract ing Devices, of which the following is a specification.

This-invention relates to extracting devices and has special reference to a device of this character which will extract turpentine and other products of wood from the same. -A.n object of this invention is to produce a'device-of this character which is simple in construction so that easy access may be obtained to the working, parts thereof when repairs "or cleaning is necessary.

The invention has for a further object the provision of novel means for heating the retort employed and of novel means for feed ing the wood into the retort.

parent from the followingdescription and "it will be understood that changes in the specific structure shown and described may be made within the scope .of the claims .with' out departing from the-spirit-of the invention. a

In the drawings forming a portion of this specification, and in which like numerals of reference indicate similar parts in the several views, Figure 1 is a longitudinal vertical section of the forward end of the device,: Fig. 2 is a longitudinal vertical section of the rear end of the same, Fig. 3 is a section on the line 3-3 of Fig. 1, Fig. 4: is an end elevation of the device.

Referring to the drawings, 10 designates a conveyer upon which sawdust or wood shavings are deposited from which the substances are to be extracted. The conveyer is supported at its inner end upon a roller 11 which is directly disposed above a hopper or receiving box 12 ,which is directly connected to a feeding chamber 13 through which alimited amount of the wood shavings is admitted to the retort 14 positioned Specification of Letters Patent. .Paten'ted J1} Application.- filed Septemberi16,,19 08. Seria1No..453,354.

posed of semicircular sections '15v and 16 which are flanged at their adjoining edges as at 17 through which are passed bolts 18 for.. detachably securing the same together. The hopper 12 isopened at its upper end for the reception of'the wood shavings which are deposited therein and which are con- V casings of various diameters which are com-.130

ducted to the adjacent feeding chamber 13.

cross section, where the shavings are passed through the same and conducted into the retort 14. which is of a large glianieter and is also'circular in cross section. The opposite extremity of the retort 14 isfclosed by acap 19 which is centrally apertured and through which is secured a stufiing box20 to receive one extremity of a sha-ft'2'1'which' is longitudinally disposed through-the" retort 14%,

which is entirely inclosed and is circular in feeding chamber 13 and is supported in a,;

- f journal 22 formed in the outer wall of the Other objectsand advantages Wlll be aphopper 12. Partitions 21 are-arrangedin is provided with gears23-and 23' disposed upon the opposite extremities thereof and which are connected to a drive shaft 24 through the medium 'of pinions 25 and 25. The shaft 21 is provided intermediately thereof with helical wings 26 which are dis- I posed about the shaft witha diameter equal to that of the retort 14. Wings 26 which are a continuation of the wings in the feeding.

drum also extend to the forward end of the device through the feeding-drum 13 and hopper 12 where they'are considerably reduced in diameter to conform to the sizes of those chambers. is bored centrally to a point within the retort 14: through which steam is conducted from a feed pipe 27 leading from-any suitable steam supply, the' shaft 21 being. connected to a radially extending pipe 28 which leads to a plurality of coil pipes 29 disposed upon the wings 26. The coilfpipes 29.;ex-

tend about the wings 26 the-entire length of the retort-'14 where they afi/corineCted'to a rad ally extending pipe 30 which conducts the condensed steammto the rear horegl ip op The forward end of-the shaft 21 tion of the shaft 21 where itis conducted through the stutiing; box 20 connecting pipe 31 and into a suitable Fi-(Zllll'l trap 32.

it will be en from reference to the drawings that the partitions 21 are located be tween the radially extending steam pipes and Ilt) which are connected to either end of the coil pipes L). Thus the steam will not pass entirely through the pipe but will be directed by the forward partition 21 into the pipe 28 and conveyed to the coils 29. After the steam has passed through the coils and iron: the pipe 5'10 into the rear end of the shaft 21, the rear partition plate will prevent any forward moren'ient. of the steam, so that the same will be carried oil by the pipe 3t to the steam trap The casing forming the chambers 12, .3 and l4 torn'ied in circular sections which are flanged as at 3? at: their opposite extrei'nities which are secured together by suitable bolts ii-t. "This enables the operator to gain arcess into the central portion of the apparatus without. much difficulty and with out having to knock down the complete apparatus.

At the rear extremity of the retort l l an outlet chamber-f it is disposed upon the under e thereof which is rn'ovided with a l: ottom obj which is supported upon a forward evtrtanit v of the lever 37 which fulerumed-,-\rp'on a standard 38 and which is provided upon its rear end with a weight 39. lily this action and construction the bottom tit is closed by the Weights and is automatically opened when a sutticient quantity of the wood shavii'igs are deposited in the elugmber 35. For the purpose of conveying th: vapors from the retort 14; pipes 410 are pos ioncd upon the upper side of the retort it which lead to suitable condensers or the litre.

The wings .26 aresupported about the shaft, 21 upon the outer extremities of the radially extended arms 12 which are carried by the shaft 21 and engage the inner edges of the wings 26 in any convenient manner.

Tue operation of the device is as follows: Sawdust or wood shavings are placed upon the conveyor lit) and fed into the upper open end of the hopper 12. The shaft. 21 is set in motion and the Wings 26 are revolved and caused "to carry the wood shavings into the feeds 9; chamber 13. The shavings are nonducted from the feeding chamber 13 into the retort which is of enlarged diameter and is provided with the steam pipes 29. The purpose of having the drum 13 of reduced diameter from that of the reto't, IA is to limit the amount of shavings eonduct/cd into the retort. so that the greatest, eficiency possible may be obtained from the apparatus disposed in the retort 14.. Steam venue? is admitted through the feed pipe 5 27 through the hollow upper end 8 of the arm 8 and into the forward end of the shaft 21 where it travels to the retort l t, and is conducted into the radially extending pipe 28.

The pipe delivers steam into the first steam box 29, from which box it passes into the pipes 29 and is by them delivered to a second box 29, from which it passes throughthc pipe 30, into the portion of 21 which is to the rightof the partition 21", shown on Fig. 2. From this portion of 21 it passes into the hollow upper end 9 of the arm 9, thence through the pipe 31 and into the trap 32. If it is desired to gain access to the inside of the casing it is only ncc sary to remove the bolts 18 and 33 and to raise the sections 15' and 16 out of positien. the retort; 14 to the rear end thereof where they are deposited in the outlet chamber 35, When a predetermined quantity of shavings have been deposited upon the bottom 36 in the chamber 35 they overcome the Weight 39 and the bottom 36 falls downwardly allowing the escape of the Wood shavings. The weight 39 then returns the bottom 36 to its closed position. The vapors which are generated by the .action of the heat produced by the coils 2t) upon the wood shavings are conducted through the pipe 40 to condensers or the like where they may be refined and prepared for use.

hen the Wood shavings 0r sawdust is.

very dry it is desirable to moisten the same by the direct.- application of steam. This is effected by the employment of steam pipes 4-1 which are positioned in the lower portion of the retort 14: at; the feeding end of the same.

What; is claimed is 1. In a device of the class described, the combination of a casing divided into a. hopper, av feeding chamber and a retort, a shaft; longitudinally disposed in said casing, spiral wings disposed about said shaft, coiled pipes disposed upon the rear faces of said Wings in the retort, said shaft being hollowed intermediately thereof for the purpose of conveying steam therethrough to said coiled pipes, an outlet chamber disposed at one extremity of said casing, a bottom-.pivotally disposed beneath said chamber, a Weight mounted upon a projection carried by said bottom for the purpose of normally holding the same in a closed n osition and means for actuating said shaft.

In a device ofithecharaeter described, the combination of a casing, said casing comprising a plurality of semi-cylindrical sections and flanges formed upon the oppo site ends of said sections for engagement- The shavings are conducted through cally formed conveyer -moi1nted longitudinally through said casing, coiled pipes disposed on said helical conveyer in the retort of saidcasing, the shaft of said conveyer being bored at its opposite extremities for oonveying steam to said coiled pipes and means for rotating said conveyer.

JOHN W; JoHNsoN.

Witnesses:

D. K. CATHERwooD, LoUIs W. BAKER. 

